Video Transmission I-Frame Staggering for Wireless Bandwidth Peaks
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Solution Overview
Problem
The high peak-to-average ratio of video transmission due to I-frames in video compression technologies like H.264 and H.265 leads to limited bandwidth capabilities in wireless networks, particularly when multiple videos collide, causing bursts of bandwidth demands that overwhelm the available air interface resources.
Innovation Solution
A method to stagger the positions of I-frames in video transmission by adjusting their positions based on cell and transmission direction considerations, reducing redundancy and improving resource utilization through finer granularity arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If I-frames of multiple videos are transmitted using conventional compression technologies (H.264/H.265), then video quality and compression efficiency are maintained, but bandwidth demands peak sharply due to I-frame collisions, overwhelming wireless network capacity
Solution Approach 1:
The system performs preliminary arrangement of I-frame positions before transmission by obtaining first positions of I-frames from multiple videos, calculating second positions that satisfy spacing conditions, and generating indication information to adjust I-frame positions in advance. This prevents I-frame collisions before they occur, smoothing bandwidth demands without compromising video compression efficiency
Solution Approach 2:
The invention changes the temporal parameter (position in time domain) of I-frames by adjusting their transmission timing. The arrangement module modifies the time domain position parameter of I-frames from first positions to second positions, ensuring that I-frames from different videos are separated by at least one video frame interval, thereby transforming peak bandwidth demands into distributed transmission patterns
2Reliability
If I-frames are staggered across all cells globally, then I-frame collisions are reduced, but redundancy of transmission bandwidths increases and resource utilization deteriorates
Solution Approach 1:
The invention segments the network into cell-specific domains, where each cell independently arranges I-frames of videos within its own cell. The arrangement module obtains first positions of I-frames in a specific cell, performs arrangement based on cell-specific parameters, and generates cell-specific indication information. This localized segmentation prevents unnecessary global coordination and eliminates bandwidth redundancy while maintaining collision avoidance within each cell boundary
3Device complexity
If arrangement is performed at coarse granularity across all videos, then implementation complexity is reduced, but I-frame spacing becomes insufficient and collisions persist
Solution Approach 1:
The invention segments the arrangement process into cell-specific units, where each cell independently performs I-frame position arrangement. This segmentation reduces the problem scale from global to local, making the arrangement process more manageable while improving spacing effectiveness within each cell. The cell-specific approach ensures that I-frames are properly spaced without requiring complex global coordination
Solution Approach 2:
The invention applies local quality by using cell-specific arrangement parameters and indication information tailored to each cell's characteristics. The arrangement module generates cell-specific second positions and indication information that reflect local video traffic patterns and cell capacity, rather than applying uniform global rules. This localized approach optimizes spacing effectiveness for each cell while keeping implementation complexity manageable
Data Source
AI summary
This application provides a video transmission method and apparatus, and pertains to the field of network technologies. In this application, after procedures such as obtaining positions of I-frames of videos, arranging the positions of the I-frames, and indicating a video capturing device management platform to adjust a position of an I-frame of a video are performed, the I-frames of the videos are staggered at a radio air interface, helping resolve a problem that I-frames of videos collide, and reduce demands for wireless network bandwidths from the plurality of videos. The problem that I-frames of videos collide is resolved on a per-cell basis, with I-frames arranged for each cell.